Quick Tip

The `2>&1` Magic for Unified Logging

Challenge: When running commands or scripts that produce both standard output (stdout) and standard error (stderr), it can be difficult to manage or analyze them together, especially when redirecting output to a file.

The Solution: Use the `2>&1` redirection operator to send both stderr and stdout to the same destination.

your_command &> output.log

Why it works: The `2` represents the file descriptor for standard error, and `1` represents the file descriptor for standard output. The `&>` operator is a shorthand that redirects both stdout and stderr to the specified file. Alternatively, `your_command > output.log 2>&1` achieves the same result by first redirecting stdout and then redirecting stderr to where stdout is currently going.

Pro-Tip: You can also use `your_command | tee output.log` to send output to both the terminal and a file simultaneously, which is great for live monitoring.

Linux Tips & Tricks | © ngelinux.com | 6/17/2026